Antifouling device



Feb. 14, 1928. 1,659,521

B. H. DYE

ANTIFOULING- DEVICE Filed Sept. 28. 1926 2 Sheets-Sheet 1 Feb. 14, 1928. Y 1,659,521

B. H. DYE I AN'I'IFOULING DEVICE Filed Sept. 28. 1926 2 Sheets-Sheet 3 Patented Feb. 14, 1928.

Y 1,6595521 PATENT OFFICE.

I 30min 3. YE, or 'nrcromeanrronmn,

ANTIFOULINQG nnvxon.

-f Application filed September 28,1926. Serial No. 138,267.

r This invention relates to,anti-fouling devices for use with cat-heads and similar dcvices, i i

An important object ofthe invention is to provide a device ofthis character PtLltlCll: larly adapted for use with the cat-heads of well drilling apparatus anddvhich provides a means vfor positively separating the first wrap of a line passed about the cat-head from subsequent wraps thereof. 1

As is well known to those familiar with the art, the cat-heads of well drilling apparatus are employed for taking temporary strains and making short lifts or hauls by the use of the drilling apparatus. The shaft upon which the cat-head is disposed is continuously driven and if it s Clflsllfedthfttfl section of pipebe shifted to the derrick to beadded to the string already in the well,

a rope is secured to the pipe, giving several turns about the cat-head and an operator tails on the opposite end of the line, with the result that asthe cat-head rotates. the pipe is drawn into the derrick. ;It will be obvious that if, during the rotation of the cat-head, the first wrap overlapsa subsequentwrap, thisfirst wrap is, inefl'ect, secured to the cat-head, with the resultthat the section :of line held by the, operatou would be wound upon the cat-head and the operator will be rapidly drawn toward the cat-head and possibly, in event he is unable to disentangle himself from the rope. be drawn about the cat-head and maimed or killed. A furtherand more specific object of the invention to provide a device of this characterwhich. in addition toseparating the first wrap from the remaining wraps,

at least a partial housing for this provides the cat-head, so

wrap. in combination with that all possibility of an overlapping of the p i i the hookfid flange 23 and arcuate extension I attain by thc elevation showing an anti-fouling device constructed in accordance 1 with my invention applied to a cat-head, a

line being shown in position; Figure 2 is a side elevation of the anti.- fouling device, the arrow indicating the n'ioveinent of a rope in application to the cat-head;

Figure 3 is a front elevation of the antifouling device detached;

Figure 4; is a fragmentary bottom plan view thereof; 1 i a a 7 Figures 5, 6 and 7 are sections on the lines 595, 66 and77 of Figure 2.

Referring now more particularly to the drawings, the numeral 10 generally designates avertioal support of a well drilling draw-works. Upon this support is mounted a bearing, 11 secured by upper and lower SEIIQSOf bolts 12 and 13. The bearing includes aremovable cap held in position by boltsil l." The shaft 10 has secured-tothe outer end thereof a cat-head comprising a spool 15-having at its ends flanges 16, one of which is arranged adjacent the bearing.

In accordance With my invention, I provide a bracket comprising a vertically ex tending plate 17 having at its upper and lower ends angular portions 18 and 19 adapted to seat against the front face of the bearing at the upperiand lower ends thereof and having slots 19 permitting passage of the upper and lower series of the bolts 12 and 13 whereby the bearing is secured to the standard 10 of the draw-works. The front face of the plate 17 confronts the drum 10 and is arcuately curved atQO, sothat it may closely fit against the periphery thereof. Adjacent its upperend, the plate 17 is offset in the general direction of the prong, as indicated at 717 and n at the bottom of the notch providing the curved edge 20, theplate 17* has an arcuate extension 21 extending beneath and partially around the drum and providingla continuation of the curved edge 20. The 'arcuate extension 21 has at its lower end a hooked flange 22, the bill portion 23 1 of p which confronts :the adj acent ilange 16 of thedruni. The drunnits flange 16,

2t thus combine to providtna tubular guide: 21 tl' rough which the first turn of the rope placed about the cat-head may be directed. The first turn of the rope is passed through this guideand since the oifset placesthe up per endof the plate 17 in such close relation to the flange 16 of the drum that the rope may pnot pass therethrough, the rope is guided to the outside of the plate and wedged longitudinally'of the drum by the offsetand this results in subsequent turns thereof engaging with the drum at the opposite side of the arcuate extension 21 and the plate 17 I accordingly do not limit myself to such specific structure except as hereinafter claimed.

I claim 1. In an anti-fouling device for use with drums having flanged ends, a bar arranged in fixed relation to the axis of the drum and perpendicular to said axis at a point intermediate the ends of the drum, the drum confronting face of the bar closely approaching and conforming to the curvature of the face of the drum throughout a portion of the periphery thereof, said bar intermediate its ends being oflset toward the flange a distance such that it coacts with the flange to prevent the passage of a rope end.

2. In an anti-fouling device for use with drums having flanged ends, a bar arranged in fixed relation to the axis of the drum and perpendicular to said axis at a point intermediate the ends of the drum, the drum confronting face of the bar closely approaching and conforming to the curvatureof the face of the drum throughout a portion of the periphery thereof, said arm having an arcuate extension partially encircling the drum, said bar adjacent the opposite end thereof from said arcuate extension being offset toward the flange a distance such that it coacts with the flange to prevent the passage 'of a rope end.

3. In an anti-fouling device for use with drums having flanged ends, a bar arranged in fixed relation to the axis of the drum and perpendicular to said axis at a point intermediate the ends of thedrum, the drum confronting face of the bar closely approaching and conforming to the curvature of the face of the drum throughout a portion of the periphery thereof, said arm having an arcuate extension partially encircling the drum, said arcuate extension having a flange the terminal portion of which extends into close proximity to the adjacent flange of the drum and combines therewith and with the drum to produce a tubular arcuate passage.

4. The combination with a, standard, a bearing carried thereby, a shaft within the bearing and a drum secured to the shaft and having flanges at its ends, a bar having its ends secured to said standard and extending signature...

perpendicularly to the axis of the drum at a point intermediate the ends thereof and adjacent one of said flanges, the drum confronting face of said bar being arcuately curved to conform to the shaping of and extending into proximity to the periphery of said drum, said bar intermediate its ends being offset toward the. flange a distance such that it 00- acts with the flange to prevent the passage of a rope end.

5. The combination with a standard, a bearing carried thereby, a shaftwithin'the bearing and a drum secured to the shaft and having flanges at its ends, a bar having its ends secured to said support and extending perpendicularly to the axis of the drum at a point intermediate theends thereof and adj acent one of said flanges, the drum confronting face of said bar being arcuately curved to conform to the shaping of and extending into proximity to the periphery of said drum, said bar having an arcuate extension partially encircling the drum and having its terminal portion secured to the bearing of the shaft. 1

6. The combination with a standard, a bearing carried thereby, a shaft within the bearing and a drum secured to the shaft and having flanges at its ends, abar having its ends secured to said support and extending perpendicularly to the axis of the drum at a point intermediate the ends thereof and adjacent one of said flanges, the drum confront ing face of said bar being arcuately curved to conform to the shaping of and extending into proximity to the periphery of said drum, said bar having an arcuate extension partially encircling the drum and having its terminal portion secured to the bearing of the shaft, said arcuate extension having a flange the terminal portion of which extends into close proximity to said flange of the drum and combines therewith and with the drum to produce an arcuate tubular passage.

7. The combination with a rope drum, of means limiting movement of a rope thereon in one direction and an arm coacting therewith arcuately curved to conform to the peripheral curvature of the drum and closely approaching the same at its inner edge, said arm. at one point confronting the said means in such spaced relation thereto as to permit engagement of a rope with the drum peripherytherebetween and at a second point approaching said means to an extent preventing the passage of a rope engaged with the drum periphery therebetween.

In testimony whereof I hereunto aflix my BOYDE H. DYE. 

